I am about to board out a bedroom floor in a new extension with 7" T&G
boards. It is over a living room and I want to cut noise transfer
downwards as much as poss. Iv'e put 100mm Rockwool Flexi between the
joists (400mm crs), but just wonder whether it is worth putting
anything between the boards and the top of the joists to dampen
footfall. I could add more Rockwool but I'm not sure if this will
affect the footfall noise.
Anyone know of an acoustic product which could be cut into strips and
laid along the top of the joists? Also will this be practical as the
boards will be fixed with 65mm cut flooring brads which may then come
loose unless the resilient layer is non compressible.
Great old drawings, the book they came from must be interesting. What
I have decided to do now is to put 2 layers of Rockwool Flexi between
the joists, I think this will deaden most of the sound as it is
pushed tight against the joists. I thought about insulating boards
over the top of the joists but then thought that I didn't want to
loose that much headroom or start trimming doors etc. Having said that
I think it's a very good idea for floating floors, but poss not for
mine as the nails would still be a solid route for noise. If it was a
separating wall between flats then it would all be done totally
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